Morrissey, the 53-year-old rocker and former lead vocalist for The Smiths, has revealed the full extent of the illness that forced him to cancel his North American hour earlier this month. And it sounds awful.

"I had a very bad time," Morrissey told Mexican radio station Reactor 105.7. "I had internal bleeding and I was rushed into hospital and I had lost a lot of blood. They tried to patch me together over the following five weeks but it didn't work. ... I was on lots of IV drips for almost five weeks, and each time it seemed as though I was back to robust health, I would decline. I had lost so much blood I had become anemic, but I'm still receiving ongoing treatment and I am very optimistic now."

Morrissey added that the costs for his treatments were so severe that he was unable to secure insurance for the rest of the tour.

"It almost became absurd the number of things that happened to me, but everything just attacked me at once," he said. "The double pneumonia — everything was really a result of the fact I had lost so much blood, so the immune defenses were very, very low and couldn't cope with anything, so therefore the slightest gust of wind and I would have a terrible cold."

Asked if doctors recommended he consider an early retirement from music, he said: "I have been cautioned to, but it's difficult for me because it's very ingrained in me."

Before canceling his tour, Morrissey, a staunch animal activist, made headlines after bowing out of a performance on “Jimmy Kimmel Live” when he learned that the pro hunting show “Duck Dynasty” would also be featured that night. Kimmel used the cancelation to poke fun at the singer's beliefs saying, “Morrissey will not be here tonight. He keeps finding new ways to depress us.”

In response, Morrissey released a statement expressing his dislike of Kimmel's humor saying, “I was disappointed with last night’s 'Jimmy Kimmel Show' wherein our smiling host managed to ridicule depression (70 percent of Americans have experienced depression according to the National Institute of Mental Health). He then found time to ridicule healthy eating (the obesity epidemic in the U.S. costs $147 billion per year in medical expenditure), and he also ridiculed the notion that animals should be entitled to the possession of their own lives."

Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

Morrissey 'cautioned' to retire from music after health scare
Rocker and animal activist details the severe illness that forced him to cancel his recent tour.